/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:06:34,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:06:34,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:06:34,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:06:34,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:06:34,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:06:34,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:06:34,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:06:34,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:06:34,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:06:34,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:06:34,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:06:34,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:06:34,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:06:34,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:06:34,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:06:34,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:06:34,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:06:34,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:06:34,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:06:34,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:06:34,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:06:34,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:06:34,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:06:34,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:06:34,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:06:34,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:06:34,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:06:34,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:06:34,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:06:34,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:06:34,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:06:34,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:06:34,734 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:06:34,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:06:34,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:06:34,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:06:34,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:06:34,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:06:34,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:06:34,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:06:34,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:06:34,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:06:34,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:06:34,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:06:34,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:06:34,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:06:34,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:06:34,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:06:34,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:06:34,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:06:34,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:06:34,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:06:34,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:06:34,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:06:34,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:06:34,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:06:34,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:06:34,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:06:35,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:06:35,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:06:35,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:06:35,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:06:35,305 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:06:35,307 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 15:06:35,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7df0d6b9e/c5fbe53b11724248bc216437d7a6a5a2/FLAG0dd4e8408 [2020-09-24 15:06:35,964 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:06:35,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 15:06:35,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7df0d6b9e/c5fbe53b11724248bc216437d7a6a5a2/FLAG0dd4e8408 [2020-09-24 15:06:36,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7df0d6b9e/c5fbe53b11724248bc216437d7a6a5a2 [2020-09-24 15:06:36,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:06:36,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:06:36,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:06:36,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:06:36,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:06:36,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785e5d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36, skipping insertion in model container [2020-09-24 15:06:36,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:06:36,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:06:36,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:06:36,608 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:06:36,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:06:36,752 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:06:36,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36 WrapperNode [2020-09-24 15:06:36,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:06:36,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:06:36,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:06:36,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:06:36,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... [2020-09-24 15:06:36,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:06:36,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:06:36,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:06:36,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:06:36,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:06:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:06:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:06:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:06:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-24 15:06:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-24 15:06:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:06:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:06:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:06:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:06:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-24 15:06:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:06:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-24 15:06:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:06:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:06:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:06:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:06:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:06:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:06:37,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:06:37,341 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 15:06:37,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:06:37 BoogieIcfgContainer [2020-09-24 15:06:37,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:06:37,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:06:37,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:06:37,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:06:37,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:06:36" (1/3) ... [2020-09-24 15:06:37,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a39176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:06:37, skipping insertion in model container [2020-09-24 15:06:37,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:06:36" (2/3) ... [2020-09-24 15:06:37,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a39176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:06:37, skipping insertion in model container [2020-09-24 15:06:37,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:06:37" (3/3) ... [2020-09-24 15:06:37,359 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-24 15:06:37,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:06:37,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:06:37,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:06:37,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:06:37,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:06:37,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:06:37,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:06:37,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:06:37,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:06:37,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:06:37,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:06:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-24 15:06:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 15:06:37,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:37,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:37,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-24 15:06:37,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:37,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396007137] [2020-09-24 15:06:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:37,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396007137] [2020-09-24 15:06:37,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:06:37,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:06:37,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473923392] [2020-09-24 15:06:37,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:06:37,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:06:37,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:06:37,748 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-09-24 15:06:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:38,078 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2020-09-24 15:06:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:06:38,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 15:06:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:38,097 INFO L225 Difference]: With dead ends: 245 [2020-09-24 15:06:38,097 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 15:06:38,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:06:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 15:06:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-24 15:06:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 15:06:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-09-24 15:06:38,173 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 23 [2020-09-24 15:06:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:38,174 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-09-24 15:06:38,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:06:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-09-24 15:06:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 15:06:38,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:38,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:38,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:06:38,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:38,179 INFO L82 PathProgramCache]: Analyzing trace with hash -119454780, now seen corresponding path program 1 times [2020-09-24 15:06:38,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:38,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434635922] [2020-09-24 15:06:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:38,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434635922] [2020-09-24 15:06:38,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:06:38,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:06:38,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616658059] [2020-09-24 15:06:38,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:06:38,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:06:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:06:38,292 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 4 states. [2020-09-24 15:06:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:38,633 INFO L93 Difference]: Finished difference Result 303 states and 342 transitions. [2020-09-24 15:06:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:06:38,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-24 15:06:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:38,637 INFO L225 Difference]: With dead ends: 303 [2020-09-24 15:06:38,637 INFO L226 Difference]: Without dead ends: 199 [2020-09-24 15:06:38,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:06:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-24 15:06:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 124. [2020-09-24 15:06:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 15:06:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-09-24 15:06:38,658 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 23 [2020-09-24 15:06:38,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:38,659 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-09-24 15:06:38,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:06:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-09-24 15:06:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 15:06:38,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:38,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:38,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:06:38,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:38,661 INFO L82 PathProgramCache]: Analyzing trace with hash -395870253, now seen corresponding path program 1 times [2020-09-24 15:06:38,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:38,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479143124] [2020-09-24 15:06:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:38,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479143124] [2020-09-24 15:06:38,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:38,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 15:06:38,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908444154] [2020-09-24 15:06:38,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:06:38,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:06:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:06:38,771 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 6 states. [2020-09-24 15:06:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:39,148 INFO L93 Difference]: Finished difference Result 310 states and 349 transitions. [2020-09-24 15:06:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:06:39,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-24 15:06:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:39,152 INFO L225 Difference]: With dead ends: 310 [2020-09-24 15:06:39,152 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 15:06:39,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:06:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 15:06:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 131. [2020-09-24 15:06:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 15:06:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2020-09-24 15:06:39,178 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 30 [2020-09-24 15:06:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:39,179 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2020-09-24 15:06:39,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:06:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2020-09-24 15:06:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 15:06:39,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:39,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:39,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:06:39,181 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1926718692, now seen corresponding path program 2 times [2020-09-24 15:06:39,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:39,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537750362] [2020-09-24 15:06:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:39,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:39,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537750362] [2020-09-24 15:06:39,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:39,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:06:39,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946898158] [2020-09-24 15:06:39,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:06:39,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:39,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:06:39,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:06:39,354 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand 8 states. [2020-09-24 15:06:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:39,869 INFO L93 Difference]: Finished difference Result 317 states and 356 transitions. [2020-09-24 15:06:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:06:39,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-09-24 15:06:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:39,872 INFO L225 Difference]: With dead ends: 317 [2020-09-24 15:06:39,872 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 15:06:39,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:06:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 15:06:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 138. [2020-09-24 15:06:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-24 15:06:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2020-09-24 15:06:39,906 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 37 [2020-09-24 15:06:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:39,907 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2020-09-24 15:06:39,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:06:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2020-09-24 15:06:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 15:06:39,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:39,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:39,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:06:39,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:39,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1889524403, now seen corresponding path program 3 times [2020-09-24 15:06:39,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:39,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592375709] [2020-09-24 15:06:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 15:06:39,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592375709] [2020-09-24 15:06:39,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:06:39,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:06:39,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201606770] [2020-09-24 15:06:39,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:06:39,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:39,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:06:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:06:39,996 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand 5 states. [2020-09-24 15:06:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:40,251 INFO L93 Difference]: Finished difference Result 248 states and 276 transitions. [2020-09-24 15:06:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:06:40,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-09-24 15:06:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:40,254 INFO L225 Difference]: With dead ends: 248 [2020-09-24 15:06:40,254 INFO L226 Difference]: Without dead ends: 143 [2020-09-24 15:06:40,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:06:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-24 15:06:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2020-09-24 15:06:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-24 15:06:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-09-24 15:06:40,265 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 44 [2020-09-24 15:06:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:40,266 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-09-24 15:06:40,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:06:40,266 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-09-24 15:06:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 15:06:40,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:40,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:40,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:06:40,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1581132658, now seen corresponding path program 1 times [2020-09-24 15:06:40,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:40,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100863904] [2020-09-24 15:06:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 15:06:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 15:06:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:40,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100863904] [2020-09-24 15:06:40,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:40,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:06:40,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414056916] [2020-09-24 15:06:40,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:06:40,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:40,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:06:40,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:06:40,453 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 11 states. [2020-09-24 15:06:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:41,098 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2020-09-24 15:06:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:06:41,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 15:06:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:41,101 INFO L225 Difference]: With dead ends: 298 [2020-09-24 15:06:41,101 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 15:06:41,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-24 15:06:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 15:06:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2020-09-24 15:06:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 15:06:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-09-24 15:06:41,116 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 80 [2020-09-24 15:06:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:41,116 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-09-24 15:06:41,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:06:41,119 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-09-24 15:06:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 15:06:41,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:41,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:41,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:06:41,123 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:41,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:41,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2142538913, now seen corresponding path program 2 times [2020-09-24 15:06:41,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:41,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547854241] [2020-09-24 15:06:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:41,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 15:06:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 15:06:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:41,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547854241] [2020-09-24 15:06:41,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:41,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 15:06:41,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176895246] [2020-09-24 15:06:41,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 15:06:41,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 15:06:41,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:06:41,400 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 13 states. [2020-09-24 15:06:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:42,123 INFO L93 Difference]: Finished difference Result 305 states and 338 transitions. [2020-09-24 15:06:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:06:42,124 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-24 15:06:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:42,125 INFO L225 Difference]: With dead ends: 305 [2020-09-24 15:06:42,126 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 15:06:42,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-24 15:06:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 15:06:42,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 151. [2020-09-24 15:06:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 15:06:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 163 transitions. [2020-09-24 15:06:42,137 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 163 transitions. Word has length 87 [2020-09-24 15:06:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:42,137 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 163 transitions. [2020-09-24 15:06:42,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 15:06:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 163 transitions. [2020-09-24 15:06:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 15:06:42,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:42,140 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:42,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:06:42,140 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1372997778, now seen corresponding path program 3 times [2020-09-24 15:06:42,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:42,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156321369] [2020-09-24 15:06:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:42,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 15:06:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 15:06:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:42,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156321369] [2020-09-24 15:06:42,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:42,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 15:06:42,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535108001] [2020-09-24 15:06:42,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 15:06:42,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:42,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 15:06:42,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 15:06:42,375 INFO L87 Difference]: Start difference. First operand 151 states and 163 transitions. Second operand 15 states. [2020-09-24 15:06:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:43,114 INFO L93 Difference]: Finished difference Result 312 states and 345 transitions. [2020-09-24 15:06:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 15:06:43,115 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-09-24 15:06:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:43,116 INFO L225 Difference]: With dead ends: 312 [2020-09-24 15:06:43,117 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 15:06:43,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-09-24 15:06:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 15:06:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 158. [2020-09-24 15:06:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 15:06:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-09-24 15:06:43,126 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 94 [2020-09-24 15:06:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:43,127 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-09-24 15:06:43,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 15:06:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-09-24 15:06:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 15:06:43,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:43,130 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:43,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:06:43,130 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:43,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1331129217, now seen corresponding path program 4 times [2020-09-24 15:06:43,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:43,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999465657] [2020-09-24 15:06:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:43,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 15:06:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 15:06:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:06:43,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999465657] [2020-09-24 15:06:43,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:43,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 15:06:43,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166669673] [2020-09-24 15:06:43,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 15:06:43,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:43,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 15:06:43,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:06:43,394 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 17 states. [2020-09-24 15:06:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:44,251 INFO L93 Difference]: Finished difference Result 319 states and 352 transitions. [2020-09-24 15:06:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 15:06:44,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-09-24 15:06:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:44,254 INFO L225 Difference]: With dead ends: 319 [2020-09-24 15:06:44,254 INFO L226 Difference]: Without dead ends: 216 [2020-09-24 15:06:44,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:06:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-24 15:06:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 165. [2020-09-24 15:06:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 15:06:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2020-09-24 15:06:44,264 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 101 [2020-09-24 15:06:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:44,265 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2020-09-24 15:06:44,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 15:06:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2020-09-24 15:06:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 15:06:44,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:44,267 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:44,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:06:44,267 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:44,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:44,268 INFO L82 PathProgramCache]: Analyzing trace with hash -837086642, now seen corresponding path program 5 times [2020-09-24 15:06:44,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:44,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718127311] [2020-09-24 15:06:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 15:06:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:06:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-09-24 15:06:44,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718127311] [2020-09-24 15:06:44,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:06:44,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:06:44,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824540779] [2020-09-24 15:06:44,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:06:44,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:06:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:06:44,353 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand 5 states. [2020-09-24 15:06:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:44,614 INFO L93 Difference]: Finished difference Result 298 states and 327 transitions. [2020-09-24 15:06:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:06:44,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-24 15:06:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:44,617 INFO L225 Difference]: With dead ends: 298 [2020-09-24 15:06:44,617 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 15:06:44,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:06:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 15:06:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 166. [2020-09-24 15:06:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-24 15:06:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2020-09-24 15:06:44,628 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 108 [2020-09-24 15:06:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:44,629 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2020-09-24 15:06:44,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:06:44,629 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2020-09-24 15:06:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 15:06:44,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:44,631 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:44,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 15:06:44,631 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash -118705538, now seen corresponding path program 1 times [2020-09-24 15:06:44,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:44,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589308477] [2020-09-24 15:06:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 15:06:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-24 15:06:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-09-24 15:06:44,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589308477] [2020-09-24 15:06:44,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:44,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:06:44,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844646894] [2020-09-24 15:06:44,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:06:44,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:44,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:06:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:06:44,737 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand 7 states. [2020-09-24 15:06:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:45,120 INFO L93 Difference]: Finished difference Result 305 states and 334 transitions. [2020-09-24 15:06:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:06:45,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-09-24 15:06:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:45,124 INFO L225 Difference]: With dead ends: 305 [2020-09-24 15:06:45,124 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 15:06:45,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:06:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 15:06:45,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 173. [2020-09-24 15:06:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-09-24 15:06:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 185 transitions. [2020-09-24 15:06:45,144 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 185 transitions. Word has length 115 [2020-09-24 15:06:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:45,144 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 185 transitions. [2020-09-24 15:06:45,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:06:45,145 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 185 transitions. [2020-09-24 15:06:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 15:06:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:45,147 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:45,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 15:06:45,147 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1732213838, now seen corresponding path program 2 times [2020-09-24 15:06:45,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:45,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267495535] [2020-09-24 15:06:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:45,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 15:06:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 15:06:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:45,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267495535] [2020-09-24 15:06:45,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:45,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 15:06:45,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113338493] [2020-09-24 15:06:45,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 15:06:45,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:45,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 15:06:45,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 15:06:45,429 INFO L87 Difference]: Start difference. First operand 173 states and 185 transitions. Second operand 19 states. [2020-09-24 15:06:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:46,360 INFO L93 Difference]: Finished difference Result 342 states and 375 transitions. [2020-09-24 15:06:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 15:06:46,361 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-09-24 15:06:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:46,362 INFO L225 Difference]: With dead ends: 342 [2020-09-24 15:06:46,362 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 15:06:46,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 15:06:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 15:06:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 180. [2020-09-24 15:06:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-24 15:06:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2020-09-24 15:06:46,372 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 122 [2020-09-24 15:06:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:46,373 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2020-09-24 15:06:46,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 15:06:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2020-09-24 15:06:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 15:06:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:46,375 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:46,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 15:06:46,375 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1756428833, now seen corresponding path program 3 times [2020-09-24 15:06:46,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:46,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459663762] [2020-09-24 15:06:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:06:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 15:06:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:46,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459663762] [2020-09-24 15:06:46,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:46,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 15:06:46,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304581919] [2020-09-24 15:06:46,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 15:06:46,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 15:06:46,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:06:46,650 INFO L87 Difference]: Start difference. First operand 180 states and 192 transitions. Second operand 21 states. [2020-09-24 15:06:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:47,618 INFO L93 Difference]: Finished difference Result 349 states and 382 transitions. [2020-09-24 15:06:47,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 15:06:47,618 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2020-09-24 15:06:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:47,620 INFO L225 Difference]: With dead ends: 349 [2020-09-24 15:06:47,620 INFO L226 Difference]: Without dead ends: 238 [2020-09-24 15:06:47,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 15:06:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-24 15:06:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 187. [2020-09-24 15:06:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-24 15:06:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2020-09-24 15:06:47,634 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 129 [2020-09-24 15:06:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:47,635 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2020-09-24 15:06:47,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 15:06:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2020-09-24 15:06:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 15:06:47,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:47,637 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:47,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 15:06:47,637 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1609418542, now seen corresponding path program 4 times [2020-09-24 15:06:47,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:47,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552664261] [2020-09-24 15:06:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:47,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:06:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 15:06:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:47,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552664261] [2020-09-24 15:06:47,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:47,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 15:06:47,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551375801] [2020-09-24 15:06:47,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 15:06:47,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:47,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 15:06:47,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-24 15:06:47,989 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 23 states. [2020-09-24 15:06:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:49,286 INFO L93 Difference]: Finished difference Result 356 states and 389 transitions. [2020-09-24 15:06:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 15:06:49,287 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-09-24 15:06:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:49,289 INFO L225 Difference]: With dead ends: 356 [2020-09-24 15:06:49,289 INFO L226 Difference]: Without dead ends: 245 [2020-09-24 15:06:49,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=519, Invalid=1287, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 15:06:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-24 15:06:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 194. [2020-09-24 15:06:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-24 15:06:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2020-09-24 15:06:49,299 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 136 [2020-09-24 15:06:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:49,300 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2020-09-24 15:06:49,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 15:06:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2020-09-24 15:06:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 15:06:49,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:49,302 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:49,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 15:06:49,302 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:49,302 INFO L82 PathProgramCache]: Analyzing trace with hash 450936575, now seen corresponding path program 5 times [2020-09-24 15:06:49,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:49,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201886487] [2020-09-24 15:06:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:49,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 15:06:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:06:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:49,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201886487] [2020-09-24 15:06:49,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:49,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 15:06:49,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208914205] [2020-09-24 15:06:49,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 15:06:49,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 15:06:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-24 15:06:49,679 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand 25 states. [2020-09-24 15:06:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:51,068 INFO L93 Difference]: Finished difference Result 363 states and 396 transitions. [2020-09-24 15:06:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 15:06:51,069 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 143 [2020-09-24 15:06:51,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:51,071 INFO L225 Difference]: With dead ends: 363 [2020-09-24 15:06:51,071 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 15:06:51,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=625, Invalid=1537, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 15:06:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 15:06:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 201. [2020-09-24 15:06:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-24 15:06:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions. [2020-09-24 15:06:51,081 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 143 [2020-09-24 15:06:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:51,082 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 213 transitions. [2020-09-24 15:06:51,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 15:06:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 213 transitions. [2020-09-24 15:06:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 15:06:51,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:51,084 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:51,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 15:06:51,084 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1664120306, now seen corresponding path program 6 times [2020-09-24 15:06:51,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:51,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760983639] [2020-09-24 15:06:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 15:06:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:06:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:51,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760983639] [2020-09-24 15:06:51,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:51,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 15:06:51,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46667092] [2020-09-24 15:06:51,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 15:06:51,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:51,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 15:06:51,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-24 15:06:51,532 INFO L87 Difference]: Start difference. First operand 201 states and 213 transitions. Second operand 27 states. [2020-09-24 15:06:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:52,544 INFO L93 Difference]: Finished difference Result 370 states and 403 transitions. [2020-09-24 15:06:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 15:06:52,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 150 [2020-09-24 15:06:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:52,549 INFO L225 Difference]: With dead ends: 370 [2020-09-24 15:06:52,549 INFO L226 Difference]: Without dead ends: 259 [2020-09-24 15:06:52,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=1809, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 15:06:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-24 15:06:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 208. [2020-09-24 15:06:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-24 15:06:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 220 transitions. [2020-09-24 15:06:52,560 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 220 transitions. Word has length 150 [2020-09-24 15:06:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:52,561 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 220 transitions. [2020-09-24 15:06:52,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 15:06:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 220 transitions. [2020-09-24 15:06:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 15:06:52,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:52,563 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:52,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 15:06:52,564 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:52,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1474822175, now seen corresponding path program 7 times [2020-09-24 15:06:52,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:52,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037966188] [2020-09-24 15:06:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 15:06:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:06:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:53,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037966188] [2020-09-24 15:06:53,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:53,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 15:06:53,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506642969] [2020-09-24 15:06:53,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 15:06:53,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:53,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 15:06:53,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-09-24 15:06:53,053 INFO L87 Difference]: Start difference. First operand 208 states and 220 transitions. Second operand 29 states. [2020-09-24 15:06:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:54,577 INFO L93 Difference]: Finished difference Result 377 states and 410 transitions. [2020-09-24 15:06:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 15:06:54,578 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 157 [2020-09-24 15:06:54,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:54,580 INFO L225 Difference]: With dead ends: 377 [2020-09-24 15:06:54,580 INFO L226 Difference]: Without dead ends: 266 [2020-09-24 15:06:54,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=867, Invalid=2103, Unknown=0, NotChecked=0, Total=2970 [2020-09-24 15:06:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-24 15:06:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 215. [2020-09-24 15:06:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 15:06:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 227 transitions. [2020-09-24 15:06:54,590 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 227 transitions. Word has length 157 [2020-09-24 15:06:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:54,591 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 227 transitions. [2020-09-24 15:06:54,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 15:06:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 227 transitions. [2020-09-24 15:06:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 15:06:54,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:54,593 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:54,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 15:06:54,594 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:54,594 INFO L82 PathProgramCache]: Analyzing trace with hash 577946862, now seen corresponding path program 8 times [2020-09-24 15:06:54,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:54,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040693144] [2020-09-24 15:06:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:55,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 15:06:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:55,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:06:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:55,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040693144] [2020-09-24 15:06:55,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:55,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 15:06:55,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201517386] [2020-09-24 15:06:55,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 15:06:55,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 15:06:55,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:06:55,144 INFO L87 Difference]: Start difference. First operand 215 states and 227 transitions. Second operand 31 states. [2020-09-24 15:06:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:57,040 INFO L93 Difference]: Finished difference Result 384 states and 417 transitions. [2020-09-24 15:06:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-24 15:06:57,041 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 164 [2020-09-24 15:06:57,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:57,043 INFO L225 Difference]: With dead ends: 384 [2020-09-24 15:06:57,043 INFO L226 Difference]: Without dead ends: 273 [2020-09-24 15:06:57,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1003, Invalid=2419, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 15:06:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-24 15:06:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 222. [2020-09-24 15:06:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 15:06:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 234 transitions. [2020-09-24 15:06:57,055 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 234 transitions. Word has length 164 [2020-09-24 15:06:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:57,055 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 234 transitions. [2020-09-24 15:06:57,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 15:06:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 234 transitions. [2020-09-24 15:06:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 15:06:57,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:57,058 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:57,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 15:06:57,058 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:57,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1374238401, now seen corresponding path program 9 times [2020-09-24 15:06:57,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:57,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188887259] [2020-09-24 15:06:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:06:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:06:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 15:06:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:06:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:06:57,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188887259] [2020-09-24 15:06:57,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:06:57,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-24 15:06:57,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081444367] [2020-09-24 15:06:57,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-24 15:06:57,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:06:57,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-24 15:06:57,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 15:06:57,610 INFO L87 Difference]: Start difference. First operand 222 states and 234 transitions. Second operand 33 states. [2020-09-24 15:06:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:06:59,601 INFO L93 Difference]: Finished difference Result 391 states and 424 transitions. [2020-09-24 15:06:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-24 15:06:59,602 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 171 [2020-09-24 15:06:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:06:59,603 INFO L225 Difference]: With dead ends: 391 [2020-09-24 15:06:59,604 INFO L226 Difference]: Without dead ends: 280 [2020-09-24 15:06:59,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1149, Invalid=2757, Unknown=0, NotChecked=0, Total=3906 [2020-09-24 15:06:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-24 15:06:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 229. [2020-09-24 15:06:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 15:06:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 241 transitions. [2020-09-24 15:06:59,614 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 241 transitions. Word has length 171 [2020-09-24 15:06:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:06:59,615 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 241 transitions. [2020-09-24 15:06:59,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-24 15:06:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 241 transitions. [2020-09-24 15:06:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 15:06:59,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:06:59,618 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:06:59,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 15:06:59,618 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:06:59,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:06:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash -454723634, now seen corresponding path program 10 times [2020-09-24 15:06:59,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:06:59,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822020710] [2020-09-24 15:06:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:06:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:00,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:00,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:07:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:00,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 15:07:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:07:00,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822020710] [2020-09-24 15:07:00,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:07:00,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-24 15:07:00,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011385361] [2020-09-24 15:07:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-24 15:07:00,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-24 15:07:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 15:07:00,285 INFO L87 Difference]: Start difference. First operand 229 states and 241 transitions. Second operand 35 states. [2020-09-24 15:07:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:02,571 INFO L93 Difference]: Finished difference Result 398 states and 431 transitions. [2020-09-24 15:07:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-09-24 15:07:02,572 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 178 [2020-09-24 15:07:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:02,574 INFO L225 Difference]: With dead ends: 398 [2020-09-24 15:07:02,575 INFO L226 Difference]: Without dead ends: 287 [2020-09-24 15:07:02,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1305, Invalid=3117, Unknown=0, NotChecked=0, Total=4422 [2020-09-24 15:07:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-24 15:07:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 236. [2020-09-24 15:07:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-24 15:07:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 248 transitions. [2020-09-24 15:07:02,585 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 248 transitions. Word has length 178 [2020-09-24 15:07:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:02,585 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 248 transitions. [2020-09-24 15:07:02,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-24 15:07:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 248 transitions. [2020-09-24 15:07:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 15:07:02,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:02,588 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:02,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 15:07:02,588 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:02,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:02,589 INFO L82 PathProgramCache]: Analyzing trace with hash 496966239, now seen corresponding path program 11 times [2020-09-24 15:07:02,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:02,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530656965] [2020-09-24 15:07:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 15:07:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 15:07:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:07:03,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530656965] [2020-09-24 15:07:03,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:07:03,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-24 15:07:03,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360850693] [2020-09-24 15:07:03,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-24 15:07:03,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-24 15:07:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 15:07:03,400 INFO L87 Difference]: Start difference. First operand 236 states and 248 transitions. Second operand 37 states. [2020-09-24 15:07:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:05,855 INFO L93 Difference]: Finished difference Result 405 states and 438 transitions. [2020-09-24 15:07:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-24 15:07:05,856 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 185 [2020-09-24 15:07:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:05,858 INFO L225 Difference]: With dead ends: 405 [2020-09-24 15:07:05,858 INFO L226 Difference]: Without dead ends: 294 [2020-09-24 15:07:05,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1471, Invalid=3499, Unknown=0, NotChecked=0, Total=4970 [2020-09-24 15:07:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-24 15:07:05,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2020-09-24 15:07:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-24 15:07:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 255 transitions. [2020-09-24 15:07:05,871 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 255 transitions. Word has length 185 [2020-09-24 15:07:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:05,871 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 255 transitions. [2020-09-24 15:07:05,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-24 15:07:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 255 transitions. [2020-09-24 15:07:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 15:07:05,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:05,873 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:05,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 15:07:05,874 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1481268562, now seen corresponding path program 12 times [2020-09-24 15:07:05,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:05,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203099376] [2020-09-24 15:07:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 15:07:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 15:07:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-09-24 15:07:06,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203099376] [2020-09-24 15:07:06,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:06,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:07:06,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589928158] [2020-09-24 15:07:06,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:07:06,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:06,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:07:06,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:07:06,023 INFO L87 Difference]: Start difference. First operand 243 states and 255 transitions. Second operand 6 states. [2020-09-24 15:07:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:06,275 INFO L93 Difference]: Finished difference Result 327 states and 350 transitions. [2020-09-24 15:07:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:07:06,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2020-09-24 15:07:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:06,279 INFO L225 Difference]: With dead ends: 327 [2020-09-24 15:07:06,279 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 15:07:06,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:07:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 15:07:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-09-24 15:07:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-24 15:07:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 262 transitions. [2020-09-24 15:07:06,292 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 262 transitions. Word has length 192 [2020-09-24 15:07:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:06,292 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 262 transitions. [2020-09-24 15:07:06,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:07:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 262 transitions. [2020-09-24 15:07:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 15:07:06,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:06,296 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:06,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 15:07:06,297 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:06,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:06,297 INFO L82 PathProgramCache]: Analyzing trace with hash 471722044, now seen corresponding path program 1 times [2020-09-24 15:07:06,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:06,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750457705] [2020-09-24 15:07:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:06,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 15:07:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-24 15:07:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-09-24 15:07:06,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750457705] [2020-09-24 15:07:06,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:06,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:07:06,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317158048] [2020-09-24 15:07:06,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:07:06,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:06,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:07:06,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:07:06,488 INFO L87 Difference]: Start difference. First operand 249 states and 262 transitions. Second operand 8 states. [2020-09-24 15:07:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:06,808 INFO L93 Difference]: Finished difference Result 293 states and 310 transitions. [2020-09-24 15:07:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:07:06,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2020-09-24 15:07:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:06,809 INFO L225 Difference]: With dead ends: 293 [2020-09-24 15:07:06,809 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:07:06,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 15:07:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:07:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:07:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:07:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:07:06,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 195 [2020-09-24 15:07:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:06,811 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:07:06,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:07:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:07:06,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:07:06,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-24 15:07:06,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:07:07,121 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-24 15:07:07,121 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 15:07:07,121 INFO L268 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2020-09-24 15:07:07,121 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-24 15:07:07,122 INFO L268 CegarLoopResult]: For program point L9-1(lines 9 15) no Hoare annotation was computed. [2020-09-24 15:07:07,122 INFO L268 CegarLoopResult]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2020-09-24 15:07:07,122 INFO L268 CegarLoopResult]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-09-24 15:07:07,122 INFO L268 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-09-24 15:07:07,123 INFO L264 CegarLoopResult]: At program point L11-6(lines 11 13) the Hoare annotation is: (let ((.cse0 (= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= 0 elem_exists_~i~0) .cse0) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2020-09-24 15:07:07,123 INFO L268 CegarLoopResult]: For program point L11-7(lines 11 13) no Hoare annotation was computed. [2020-09-24 15:07:07,124 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-24 15:07:07,124 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 15:07:07,124 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 15:07:07,124 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 15:07:07,125 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 15:07:07,125 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 15:07:07,126 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 15:07:07,126 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 15:07:07,126 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 15:07:07,126 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:07:07,126 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 15:07:07,126 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:07:07,127 INFO L271 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2020-09-24 15:07:07,127 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-24 15:07:07,127 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 15:07:07,127 INFO L268 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2020-09-24 15:07:07,128 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 15:07:07,128 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 8) no Hoare annotation was computed. [2020-09-24 15:07:07,128 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-24 15:07:07,128 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:07:07,128 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:07:07,129 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:07:07,129 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:07:07,129 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-24 15:07:07,130 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 15:07:07,130 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-24 15:07:07,130 INFO L264 CegarLoopResult]: At program point L52-2(line 52) the Hoare annotation is: false [2020-09-24 15:07:07,130 INFO L268 CegarLoopResult]: For program point L52-3(line 52) no Hoare annotation was computed. [2020-09-24 15:07:07,130 INFO L268 CegarLoopResult]: For program point L52-4(line 52) no Hoare annotation was computed. [2020-09-24 15:07:07,131 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-24 15:07:07,131 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 15:07:07,131 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-24 15:07:07,131 INFO L264 CegarLoopResult]: At program point L44-5(lines 44 48) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-09-24 15:07:07,131 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L36-4(line 36) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L36-5(line 36) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L264 CegarLoopResult]: At program point L36-6(lines 36 39) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L36-7(lines 36 39) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 15:07:07,132 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 15:07:07,133 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-09-24 15:07:07,133 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 32) no Hoare annotation was computed. [2020-09-24 15:07:07,133 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 15:07:07,133 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 15:07:07,133 INFO L268 CegarLoopResult]: For program point L45-3(lines 45 47) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L268 CegarLoopResult]: For program point L45-4(line 45) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L268 CegarLoopResult]: For program point L45-5(line 45) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L264 CegarLoopResult]: At program point L45-6(lines 45 47) the Hoare annotation is: false [2020-09-24 15:07:07,134 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L268 CegarLoopResult]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-24 15:07:07,134 INFO L264 CegarLoopResult]: At program point L29-6(lines 29 31) the Hoare annotation is: false [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L264 CegarLoopResult]: At program point L46-2(line 46) the Hoare annotation is: false [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L46-3(line 46) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L46-4(line 46) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 15:07:07,135 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 15:07:07,136 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 15:07:07,136 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 15:07:07,136 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 15:07:07,136 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-09-24 15:07:07,136 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-24 15:07:07,136 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-24 15:07:07,136 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 15:07:07,136 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 25) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 25) the Hoare annotation is: (= main_~n~0 0) [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 25) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L40-4(line 40) no Hoare annotation was computed. [2020-09-24 15:07:07,137 INFO L264 CegarLoopResult]: At program point L40-5(lines 40 49) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-09-24 15:07:07,137 INFO L268 CegarLoopResult]: For program point L40-6(lines 40 49) no Hoare annotation was computed. [2020-09-24 15:07:07,138 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 15:07:07,138 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 15:07:07,138 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 15:07:07,138 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 15:07:07,138 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-09-24 15:07:07,138 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-24 15:07:07,139 INFO L268 CegarLoopResult]: For program point L41-3(lines 41 43) no Hoare annotation was computed. [2020-09-24 15:07:07,139 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-24 15:07:07,139 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-24 15:07:07,139 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-24 15:07:07,139 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 15:07:07,139 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-24 15:07:07,141 INFO L268 CegarLoopResult]: For program point L41-9(lines 41 43) no Hoare annotation was computed. [2020-09-24 15:07:07,141 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 15:07:07,141 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 15:07:07,141 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-24 15:07:07,141 INFO L268 CegarLoopResult]: For program point L50-3(line 50) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L50-4(line 50) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L264 CegarLoopResult]: At program point L50-5(lines 50 54) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L50-6(lines 50 54) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L264 CegarLoopResult]: At program point L42-1(line 42) the Hoare annotation is: false [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L42-3(line 42) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L42-4(line 42) no Hoare annotation was computed. [2020-09-24 15:07:07,142 INFO L268 CegarLoopResult]: For program point L42-5(line 42) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L51-3(lines 51 53) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L51-4(line 51) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L268 CegarLoopResult]: For program point L51-5(line 51) no Hoare annotation was computed. [2020-09-24 15:07:07,143 INFO L264 CegarLoopResult]: At program point L51-6(lines 51 53) the Hoare annotation is: false [2020-09-24 15:07:07,144 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-24 15:07:07,144 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-24 15:07:07,144 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-24 15:07:07,145 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-24 15:07:07,145 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-24 15:07:07,145 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-24 15:07:07,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:07:07 BoogieIcfgContainer [2020-09-24 15:07:07,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:07:07,181 INFO L168 Benchmark]: Toolchain (without parser) took 30878.90 ms. Allocated memory was 140.0 MB in the beginning and 447.7 MB in the end (delta: 307.8 MB). Free memory was 102.8 MB in the beginning and 182.3 MB in the end (delta: -79.5 MB). Peak memory consumption was 228.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:07,182 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 15:07:07,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.10 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 180.1 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:07,183 INFO L168 Benchmark]: Boogie Preprocessor took 51.35 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 178.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:07,183 INFO L168 Benchmark]: RCFGBuilder took 543.52 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 148.9 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:07,184 INFO L168 Benchmark]: TraceAbstraction took 29827.01 ms. Allocated memory was 201.9 MB in the beginning and 447.7 MB in the end (delta: 245.9 MB). Free memory was 148.9 MB in the beginning and 182.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 212.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:07,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 447.10 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 180.1 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.35 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 178.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.52 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 148.9 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29827.01 ms. Allocated memory was 201.9 MB in the beginning and 447.7 MB in the end (delta: 245.9 MB). Free memory was 148.9 MB in the beginning and 182.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 212.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (0 <= i && size == \old(size)) || (size == \old(size) && 1 <= \old(size)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.3s, OverallIterations: 23, TraceHistogramMax: 17, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2555 SDtfs, 3525 SDslu, 18483 SDs, 0 SdLazy, 16819 SolverSat, 714 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 797 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 656 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5293 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 1027 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 174 PreInvPairs, 200 NumberOfFragments, 89 HoareAnnotationTreeSize, 174 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 2664 NumberOfCodeBlocks, 2664 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2641 ConstructedInterpolants, 0 QuantifiedInterpolants, 752916 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 2378/7275 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...